Plz
according to the table above, about how much mass would a nucleus that is composed of 15 protons and 18 neutrons have?
18 amu
33 amu
23 amu
15 amu

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)